As a Places view user, I would like the cluster preview layer at the bottom to have a resize handle so I can adjust its size with the mouse (desktop) or a touch (mobile).

• Similar to the main navigation, the size setting should be remembered, e.g. by saving it to the browser's local storage.
• At the moment, the size is specified via CSS based on the screen size and orientation. You can remove this if it interferes with the new resize functionality.
• Since the code size of our frontend is at its limits, the resize handle should ideally be implemented with plain JS / VueJS, i.e. without installing a plugin.

This is a follow-up issue to improve the usability of the new Places cluster view:

• Places: Cluster View #1187
• Places: Add Cluster View #2596